Modernizing Computer Telephony Integration: Overcoming Security and Scalability Barriers in Contact Centers

This study explores the integration of Computer Telephony Integration (CTI) in both legacy on-premises and modern cloud-based contact center systems, with a particular focus on security challenges and integration methodologies. By analyzing implementations in retail and mid-sized tech companies between 2018 and 2024, the research compares integration processes, scalability, and security concerns. The findings highlight that cloud-based contact centers provide greater flexibility and scalability, benefiting from modern APIs, omnichannel support, and centralized management. However, legacy systems, while reliable, require complex middleware for integration and face scalability limitations. Security remains a major concern in both environments, with cloud solutions offering enhanced compliance measures and regular security updates.

A key contribution of this study is the development of a security-focused comparative framework that helps practitioners evaluate CTI implementations across different environments. It identifies encryption, authentication, and regulatory compliance (e.g., GDPR and HIPAA) as critical security pillars for both legacy and cloud-based systems. As organizations increasingly shift towards cloud solutions for cost-effectiveness and flexibility, future research should focus on AI-enhanced security frameworks, hybrid CTI models, and the role of real-time analytics in customer engagement. Strengthening security measures and ensuring compliance will be crucial for the continued evolution of contact center technologies.